Brown edges around his fin?

[Dontpanic]

I got him 2 weeks ago at Petco. He lived in a 2 gallon glass bowl for 1 week while I got his tank set up.

Housing
What size is your tank? 10 gallon
What temperature is your tank? 76* F
Does your tank have a filter? Yes
Does your tank have an air stone or other type of aeration? No
Is your tank heated? Yes
What tank mates does your betta fish live with? 1 Cory Cat
2 Glowlight Tetras
2 Snails
3 Ghost Shrimp

Food
What type of food do you feed your betta fish? Betta Pellets
How often do you feed your betta fish? Twice a day, 4-5 pellets every day.

Maintenance
How often do you perform a water change? Every week.
What percentage of the water do you change when you perform a water change? 20%
What type of additives do you add to the water when you perform a water change? Water conditioner

[Dontpanic]

Water Parameters:
Have you tested your water? Not yet.

[Dontpanic]

:3 Sorry, I meant tail, not fin. Is it fin rot? O_o

[small fry]

Well, looking at the pictures I'd say it looks like fin nipping. Have you ever seen your glowlights nip at your bettas fins? It is not uncommon for small community fish such as Tetras to nip at betta's fins. If it looks like there might be a problem between your tetras and your betta, you should remove your betta from the tank (and put him in a differant tank or bowl). If your betta's fins are being nipped, and the nipping continues, your betta could get an infection. And I forgot to check your post but is your tank cycled? Ammonia is very dangerous to fish. Well, hope this helps!


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10gal GatorSwamp
10gal CichlidRock
1.5gal BuriedTreasure

[Dontpanic]

I've only seen the betta following them around because he was curious, I just transferred them in there yesterday. They're pretty peaceful and I haven't seen them nip. I had the tank cycling for about 3 days with bacteria from another fish tank, have 2 live plants in there, and had the water checked but the ammonia was pretty low, and the nitrates were high. D: My betta (his name is Pippin! :D) has mostly been up at the front and side of the tank along the glass, so I'm not sure if that has to do with anything...

[Adastra]

Make sure the ammonia/nitrite stays around .25 ppm, usually the dark edging is a sign of infection, but your fish seems to have a lot of black pigment under the red layer, so his regrowth is probably coloring up black before it colors up red, new fin growth often comes in clear or whitish and colors up later. The pattern in it looks consistent with the fin being nipped by the other fish, or the betta biting himself--however, if the water quality deteriorates these nipped areas could easily get infected, so keep up with the water changes.

Once the tank is cycled you're going to have to make some decisions about your stocking. Cories and tetras are both social animals, without more of their own kind to interact with they will become stressed and will not live as long. In the case of the tetras, they will be much more likely to nip at your betta if they are in such small numbers. These fish swim in schools of thousands in the wild, so you should not keep them in groups smaller than six--personally, I would choose either the glow lights or the cories. Remember to add new fish slowly so that your bacterial colony has time to adjust and build itself up to support additional stock.

[small fry]

Nitrates are not usually as toxic as ammonia or nitrites but Nitrates can cause harm if left over 20ppm for a few weeks. A gravel vac will help signifacantly with your nitrates. You could also try some types of products that help keep your nitrates low. Hope this helps!


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10gal GatorSwamp
10gal CichlidRock
1.5gal BuriedTreasure

[Dontpanic]

Thank you! I've done a bit to get the nitrates down and I'm going to get them tested, I'll also transfer my glow lights to a different tank and add a couple more cories. ^^

[djflipside]

I have the same issue with my white betta fish, but now it is spreading. Im not to sure if it is fin rot. I have done a 50% water change in my 5 gallon tank as well as added salt to help heal.

Can anyone help

[djflipside]

I totally forgot but here is a pic of him